What do I mean by hardware?
Rather than emulating the device in software, which can cause various issues (especially related to timing), by mapping the actual device logic to a field programmable gate array (FPGA), you can achieve an "exact" replica of the hardware.
It's a super cool project, and I highly recommend checking it out if you have an interest in old machines (Apple II, Commodore 64, etc.).
Looks like Intel (prev Terasic) is still selling them but they're now around $300, they used to be under $150 if memory serves.
If I were jumping into this today, I'd prefer the much more powerful KV260[1] from the blog post over the DE10-Nano, that board was limited!
[0]https://www.intel.com/content/www/us/en/developer/topic-tech...
[1]https://www.amd.com/en/products/system-on-modules/kria/k26/k...
Sidenote: somewhat sad to see the consolidation into Intel and AMD, but FPGAs have always been second class citizens in the silicon space :(
Goddamn if that buyer's remorse didn't scar me for life, the amount of researching I did before any purchase from then on was obsessive. I still think of the card fondly for what it represented to 10 year old me. This story does have a happy ending, we ended up getting a Dell XPS not long after with a Pentium 3 & a GeForce 2, back when they were still beige.
The specification is a behavioral target, rather than a circuit diagram.
Did anyone else get a slight feeling of LLM-ism from that sentence? Not a complaint, because I've noticed AI is definitely leading to some great boosts (the somewhat related https://news.ycombinator.com/item?id=49717638 is on the front page as I write this.)
I really wanted a DX4@100 back then but it wasn't available in my area. I "had" to get a Pentium 60, which I was not happy about lol.
Upgraded to a Pentium 200 MMX. Whoa!
And then I also got a specific batch Celeron 300a to overclock.
"Stole" my dad's Matrox Mystique, coz what does he need a "3D" card for? Played "Destruction Derby" a lot, just coz 3D card: https://archive.org/details/dd2matrox_19961205
Wow, the times!
The idea that we should ever allow companies to gate how we use hardware is a joke. The sustainability here is just wildly off the charts impressive. We as a species have blanket legal right to fix things we buy. Any legal monkeying that that from is us an affront to all of us, and if applicable whatever god or gods that made us.
https://github.com/nand2mario/z486_MiSTer
There is also a recent fork by github user janisc which is developing a direct 31khz output.
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Speaking to general : To be clear, none of these MiSTer cores include the Voodoo graphics portion discussed in the parent link.
I doubt that the degree of sheer hyper-optimisation required to get a Voodoo (plus the Pentium to make it meaningful!) into a DE10-Nano necessarily exists. Never-say-never, sure, but also, just-no - hahaha.
That work is for higher specced boards like the Xilinx discussed.